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Finding the Fourth Proportional to 555.39, 833.12 and 144.53

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Solution

The fourth proportional to 555.39, 833.12 and 144.53 is: 216.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.39 : 833.12 = 144.53 : x
  2. Step 2: Convert to fraction form
    555.39/833.12 = 144.53/x
  3. Step 3: Cross multiply
    555.39x = 833.12 × 144.53
  4. Step 4: Simplify right side
    555.39x = 120,410.83
  5. Step 5: Solve for x
    x = 120,410.83/555.39
  6. Step 6: Final answer
    x = 216.80

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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.