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Finding the Fourth Proportional to 867.99, 1,302.89 and 503.49

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Solution

The fourth proportional to 867.99, 1,302.89 and 503.49 is: 755.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    867.99 : 1,302.89 = 503.49 : x
  2. Step 2: Convert to fraction form
    867.99/1,302.89 = 503.49/x
  3. Step 3: Cross multiply
    867.99x = 1,302.89 × 503.49
  4. Step 4: Simplify right side
    867.99x = 655,989.57
  5. Step 5: Solve for x
    x = 655,989.57/867.99
  6. Step 6: Final answer
    x = 755.76

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Double scale
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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.