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Finding the Fourth Proportional to 425.53, 637.39 and 348.13

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Solution

The fourth proportional to 425.53, 637.39 and 348.13 is: 521.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    425.53 : 637.39 = 348.13 : x
  2. Step 2: Convert to fraction form
    425.53/637.39 = 348.13/x
  3. Step 3: Cross multiply
    425.53x = 637.39 × 348.13
  4. Step 4: Simplify right side
    425.53x = 221,894.58
  5. Step 5: Solve for x
    x = 221,894.58/425.53
  6. Step 6: Final answer
    x = 521.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.