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Finding the Fourth Proportional to 384.07, 572.85 and 372.53

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Solution

The fourth proportional to 384.07, 572.85 and 372.53 is: 555.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    384.07 : 572.85 = 372.53 : x
  2. Step 2: Convert to fraction form
    384.07/572.85 = 372.53/x
  3. Step 3: Cross multiply
    384.07x = 572.85 × 372.53
  4. Step 4: Simplify right side
    384.07x = 213,403.81
  5. Step 5: Solve for x
    x = 213,403.81/384.07
  6. Step 6: Final answer
    x = 555.64

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.