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Finding the Fourth Proportional to 846.99, 1,270.49 and 436.59

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Solution

The fourth proportional to 846.99, 1,270.49 and 436.59 is: 654.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    846.99 : 1,270.49 = 436.59 : x
  2. Step 2: Convert to fraction form
    846.99/1,270.49 = 436.59/x
  3. Step 3: Cross multiply
    846.99x = 1,270.49 × 436.59
  4. Step 4: Simplify right side
    846.99x = 554,681.05
  5. Step 5: Solve for x
    x = 554,681.05/846.99
  6. Step 6: Final answer
    x = 654.89

Related Problems

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.