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Finding the Fourth Proportional to 713.96, 1,070.02 and 348.24

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Solution

The fourth proportional to 713.96, 1,070.02 and 348.24 is: 521.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    713.96 : 1,070.02 = 348.24 : x
  2. Step 2: Convert to fraction form
    713.96/1,070.02 = 348.24/x
  3. Step 3: Cross multiply
    713.96x = 1,070.02 × 348.24
  4. Step 4: Simplify right side
    713.96x = 372,623.76
  5. Step 5: Solve for x
    x = 372,623.76/713.96
  6. Step 6: Final answer
    x = 521.91

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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.