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Finding the Fourth Proportional to 657.60, 907.50 and 358.86

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Solution

The fourth proportional to 657.60, 907.50 and 358.86 is: 495.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    657.60 : 907.50 = 358.86 : x
  2. Step 2: Convert to fraction form
    657.60/907.50 = 358.86/x
  3. Step 3: Cross multiply
    657.60x = 907.50 × 358.86
  4. Step 4: Simplify right side
    657.60x = 325,670.20
  5. Step 5: Solve for x
    x = 325,670.20/657.60
  6. Step 6: Final answer
    x = 495.24

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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.