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Finding the Fourth Proportional to 655.28, 904.32 and 360.53

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Solution

The fourth proportional to 655.28, 904.32 and 360.53 is: 497.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.28 : 904.32 = 360.53 : x
  2. Step 2: Convert to fraction form
    655.28/904.32 = 360.53/x
  3. Step 3: Cross multiply
    655.28x = 904.32 × 360.53
  4. Step 4: Simplify right side
    655.28x = 326,034.49
  5. Step 5: Solve for x
    x = 326,034.49/655.28
  6. Step 6: Final answer
    x = 497.55

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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.