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Finding the Fourth Proportional to 653.15, 901.37 and 358.42

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Solution

The fourth proportional to 653.15, 901.37 and 358.42 is: 494.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    653.15 : 901.37 = 358.42 : x
  2. Step 2: Convert to fraction form
    653.15/901.37 = 358.42/x
  3. Step 3: Cross multiply
    653.15x = 901.37 × 358.42
  4. Step 4: Simplify right side
    653.15x = 323,064.53
  5. Step 5: Solve for x
    x = 323,064.53/653.15
  6. Step 6: Final answer
    x = 494.63

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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.