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Finding the Fourth Proportional to 912.84, 1,369.15 and 365.03

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Solution

The fourth proportional to 912.84, 1,369.15 and 365.03 is: 547.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    912.84 : 1,369.15 = 365.03 : x
  2. Step 2: Convert to fraction form
    912.84/1,369.15 = 365.03/x
  3. Step 3: Cross multiply
    912.84x = 1,369.15 × 365.03
  4. Step 4: Simplify right side
    912.84x = 499,784.10
  5. Step 5: Solve for x
    x = 499,784.10/912.84
  6. Step 6: Final answer
    x = 547.50

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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.