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Finding the Fourth Proportional to 572.32, 858.64 and 187.60

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Solution

The fourth proportional to 572.32, 858.64 and 187.60 is: 281.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.32 : 858.64 = 187.60 : x
  2. Step 2: Convert to fraction form
    572.32/858.64 = 187.60/x
  3. Step 3: Cross multiply
    572.32x = 858.64 × 187.60
  4. Step 4: Simplify right side
    572.32x = 161,080.86
  5. Step 5: Solve for x
    x = 161,080.86/572.32
  6. Step 6: Final answer
    x = 281.45

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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.