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Finding the Fourth Proportional to 156.47, 216.07 and 141.89

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Solution

The fourth proportional to 156.47, 216.07 and 141.89 is: 195.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    156.47 : 216.07 = 141.89 : x
  2. Step 2: Convert to fraction form
    156.47/216.07 = 141.89/x
  3. Step 3: Cross multiply
    156.47x = 216.07 × 141.89
  4. Step 4: Simplify right side
    156.47x = 30,656.74
  5. Step 5: Solve for x
    x = 30,656.74/156.47
  6. Step 6: Final answer
    x = 195.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.