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Finding the Fourth Proportional to 1,182.70, 1,632.35 and 710.98

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Solution

The fourth proportional to 1,182.70, 1,632.35 and 710.98 is: 981.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,182.70 : 1,632.35 = 710.98 : x
  2. Step 2: Convert to fraction form
    1,182.70/1,632.35 = 710.98/x
  3. Step 3: Cross multiply
    1,182.70x = 1,632.35 × 710.98
  4. Step 4: Simplify right side
    1,182.70x = 1,160,565.90
  5. Step 5: Solve for x
    x = 1,160,565.90/1,182.70
  6. Step 6: Final answer
    x = 981.28

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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.