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Finding the Fourth Proportional to 684.03, 945.70 and 527.18

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Solution

The fourth proportional to 684.03, 945.70 and 527.18 is: 728.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    684.03 : 945.70 = 527.18 : x
  2. Step 2: Convert to fraction form
    684.03/945.70 = 527.18/x
  3. Step 3: Cross multiply
    684.03x = 945.70 × 527.18
  4. Step 4: Simplify right side
    684.03x = 498,554.13
  5. Step 5: Solve for x
    x = 498,554.13/684.03
  6. Step 6: Final answer
    x = 728.85

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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.