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Finding the Fourth Proportional to 657.45, 907.28 and 362.72

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Solution

The fourth proportional to 657.45, 907.28 and 362.72 is: 500.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    657.45 : 907.28 = 362.72 : x
  2. Step 2: Convert to fraction form
    657.45/907.28 = 362.72/x
  3. Step 3: Cross multiply
    657.45x = 907.28 × 362.72
  4. Step 4: Simplify right side
    657.45x = 329,090.42
  5. Step 5: Solve for x
    x = 329,090.42/657.45
  6. Step 6: Final answer
    x = 500.56

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1.5x scale

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.