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Finding the Fourth Proportional to 723.03, 1,079.34 and 630.75

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Solution

The fourth proportional to 723.03, 1,079.34 and 630.75 is: 941.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    723.03 : 1,079.34 = 630.75 : x
  2. Step 2: Convert to fraction form
    723.03/1,079.34 = 630.75/x
  3. Step 3: Cross multiply
    723.03x = 1,079.34 × 630.75
  4. Step 4: Simplify right side
    723.03x = 680,793.71
  5. Step 5: Solve for x
    x = 680,793.71/723.03
  6. Step 6: Final answer
    x = 941.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.