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Finding the Fourth Proportional to 664.70, 916.22 and 524.58

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Solution

The fourth proportional to 664.70, 916.22 and 524.58 is: 723.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    664.70 : 916.22 = 524.58 : x
  2. Step 2: Convert to fraction form
    664.70/916.22 = 524.58/x
  3. Step 3: Cross multiply
    664.70x = 916.22 × 524.58
  4. Step 4: Simplify right side
    664.70x = 480,630.69
  5. Step 5: Solve for x
    x = 480,630.69/664.70
  6. Step 6: Final answer
    x = 723.08

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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.