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Finding the Fourth Proportional to 971.82, 1,341.09 and 529.74

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Solution

The fourth proportional to 971.82, 1,341.09 and 529.74 is: 731.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    971.82 : 1,341.09 = 529.74 : x
  2. Step 2: Convert to fraction form
    971.82/1,341.09 = 529.74/x
  3. Step 3: Cross multiply
    971.82x = 1,341.09 × 529.74
  4. Step 4: Simplify right side
    971.82x = 710,429.02
  5. Step 5: Solve for x
    x = 710,429.02/971.82
  6. Step 6: Final answer
    x = 731.03

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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.