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Finding the Fourth Proportional to 882.74, 1,323.66 and 471.80

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Solution

The fourth proportional to 882.74, 1,323.66 and 471.80 is: 707.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    882.74 : 1,323.66 = 471.80 : x
  2. Step 2: Convert to fraction form
    882.74/1,323.66 = 471.80/x
  3. Step 3: Cross multiply
    882.74x = 1,323.66 × 471.80
  4. Step 4: Simplify right side
    882.74x = 624,502.79
  5. Step 5: Solve for x
    x = 624,502.79/882.74
  6. Step 6: Final answer
    x = 707.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.