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Finding the Fourth Proportional to 502.68, 692.16 and 440.16

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Solution

The fourth proportional to 502.68, 692.16 and 440.16 is: 606.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    502.68 : 692.16 = 440.16 : x
  2. Step 2: Convert to fraction form
    502.68/692.16 = 440.16/x
  3. Step 3: Cross multiply
    502.68x = 692.16 × 440.16
  4. Step 4: Simplify right side
    502.68x = 304,661.15
  5. Step 5: Solve for x
    x = 304,661.15/502.68
  6. Step 6: Final answer
    x = 606.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.