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Finding the Fourth Proportional to 653.11, 901.30 and 358.39

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Solution

The fourth proportional to 653.11, 901.30 and 358.39 is: 494.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    653.11 : 901.30 = 358.39 : x
  2. Step 2: Convert to fraction form
    653.11/901.30 = 358.39/x
  3. Step 3: Cross multiply
    653.11x = 901.30 × 358.39
  4. Step 4: Simplify right side
    653.11x = 323,010.61
  5. Step 5: Solve for x
    x = 323,010.61/653.11
  6. Step 6: Final answer
    x = 494.57

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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.