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Finding the Fourth Proportional to 713.96, 985.33 and 514.95

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Solution

The fourth proportional to 713.96, 985.33 and 514.95 is: 710.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    713.96 : 985.33 = 514.95 : x
  2. Step 2: Convert to fraction form
    713.96/985.33 = 514.95/x
  3. Step 3: Cross multiply
    713.96x = 985.33 × 514.95
  4. Step 4: Simplify right side
    713.96x = 507,394.40
  5. Step 5: Solve for x
    x = 507,394.40/713.96
  6. Step 6: Final answer
    x = 710.68

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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.