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Finding the Fourth Proportional to 653.20, 901.02 and 404.08

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Solution

The fourth proportional to 653.20, 901.02 and 404.08 is: 557.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    653.20 : 901.02 = 404.08 : x
  2. Step 2: Convert to fraction form
    653.20/901.02 = 404.08/x
  3. Step 3: Cross multiply
    653.20x = 901.02 × 404.08
  4. Step 4: Simplify right side
    653.20x = 364,084.16
  5. Step 5: Solve for x
    x = 364,084.16/653.20
  6. Step 6: Final answer
    x = 557.39

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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.