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Finding the Fourth Proportional to 473.52, 653.58 and 308.15

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Solution

The fourth proportional to 473.52, 653.58 and 308.15 is: 425.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    473.52 : 653.58 = 308.15 : x
  2. Step 2: Convert to fraction form
    473.52/653.58 = 308.15/x
  3. Step 3: Cross multiply
    473.52x = 653.58 × 308.15
  4. Step 4: Simplify right side
    473.52x = 201,397.41
  5. Step 5: Solve for x
    x = 201,397.41/473.52
  6. Step 6: Final answer
    x = 425.32

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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.