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Finding the Fourth Proportional to 841.30, 1,161.47 and 562.01

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Solution

The fourth proportional to 841.30, 1,161.47 and 562.01 is: 775.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    841.30 : 1,161.47 = 562.01 : x
  2. Step 2: Convert to fraction form
    841.30/1,161.47 = 562.01/x
  3. Step 3: Cross multiply
    841.30x = 1,161.47 × 562.01
  4. Step 4: Simplify right side
    841.30x = 652,753.35
  5. Step 5: Solve for x
    x = 652,753.35/841.30
  6. Step 6: Final answer
    x = 775.89

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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.