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Finding the Fourth Proportional to 653.70, 901.32 and 553.92

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Solution

The fourth proportional to 653.70, 901.32 and 553.92 is: 763.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    653.70 : 901.32 = 553.92 : x
  2. Step 2: Convert to fraction form
    653.70/901.32 = 553.92/x
  3. Step 3: Cross multiply
    653.70x = 901.32 × 553.92
  4. Step 4: Simplify right side
    653.70x = 499,259.17
  5. Step 5: Solve for x
    x = 499,259.17/653.70
  6. Step 6: Final answer
    x = 763.74

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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.