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Finding the Fourth Proportional to 722.61, 993.51 and 588.15

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Solution

The fourth proportional to 722.61, 993.51 and 588.15 is: 808.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    722.61 : 993.51 = 588.15 : x
  2. Step 2: Convert to fraction form
    722.61/993.51 = 588.15/x
  3. Step 3: Cross multiply
    722.61x = 993.51 × 588.15
  4. Step 4: Simplify right side
    722.61x = 584,332.91
  5. Step 5: Solve for x
    x = 584,332.91/722.61
  6. Step 6: Final answer
    x = 808.64

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.