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Finding the Fourth Proportional to 713.34, 985.23 and 547.20

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Solution

The fourth proportional to 713.34, 985.23 and 547.20 is: 755.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    713.34 : 985.23 = 547.20 : x
  2. Step 2: Convert to fraction form
    713.34/985.23 = 547.20/x
  3. Step 3: Cross multiply
    713.34x = 985.23 × 547.20
  4. Step 4: Simplify right side
    713.34x = 539,117.86
  5. Step 5: Solve for x
    x = 539,117.86/713.34
  6. Step 6: Final answer
    x = 755.77

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1.5x scale

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.