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Finding the Fourth Proportional to 157.94, 216.85 and 148.34

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Solution

The fourth proportional to 157.94, 216.85 and 148.34 is: 203.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    157.94 : 216.85 = 148.34 : x
  2. Step 2: Convert to fraction form
    157.94/216.85 = 148.34/x
  3. Step 3: Cross multiply
    157.94x = 216.85 × 148.34
  4. Step 4: Simplify right side
    157.94x = 32,166.79
  5. Step 5: Solve for x
    x = 32,166.79/157.94
  6. Step 6: Final answer
    x = 203.66

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.