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Finding the Fourth Proportional to 657.76, 907.28 and 436.62

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Solution

The fourth proportional to 657.76, 907.28 and 436.62 is: 602.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    657.76 : 907.28 = 436.62 : x
  2. Step 2: Convert to fraction form
    657.76/907.28 = 436.62/x
  3. Step 3: Cross multiply
    657.76x = 907.28 × 436.62
  4. Step 4: Simplify right side
    657.76x = 396,136.59
  5. Step 5: Solve for x
    x = 396,136.59/657.76
  6. Step 6: Final answer
    x = 602.25

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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.