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Finding the Fourth Proportional to 555.01, 831.59 and 372.45

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Solution

The fourth proportional to 555.01, 831.59 and 372.45 is: 558.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.01 : 831.59 = 372.45 : x
  2. Step 2: Convert to fraction form
    555.01/831.59 = 372.45/x
  3. Step 3: Cross multiply
    555.01x = 831.59 × 372.45
  4. Step 4: Simplify right side
    555.01x = 309,725.70
  5. Step 5: Solve for x
    x = 309,725.70/555.01
  6. Step 6: Final answer
    x = 558.05

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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.