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Finding the Fourth Proportional to 345.53, 518.02 and 296.76

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Solution

The fourth proportional to 345.53, 518.02 and 296.76 is: 444.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    345.53 : 518.02 = 296.76 : x
  2. Step 2: Convert to fraction form
    345.53/518.02 = 296.76/x
  3. Step 3: Cross multiply
    345.53x = 518.02 × 296.76
  4. Step 4: Simplify right side
    345.53x = 153,726.87
  5. Step 5: Solve for x
    x = 153,726.87/345.53
  6. Step 6: Final answer
    x = 444.91

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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.