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Finding the Fourth Proportional to 233.95, 322.91 and 135.70

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Solution

The fourth proportional to 233.95, 322.91 and 135.70 is: 187.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    233.95 : 322.91 = 135.70 : x
  2. Step 2: Convert to fraction form
    233.95/322.91 = 135.70/x
  3. Step 3: Cross multiply
    233.95x = 322.91 × 135.70
  4. Step 4: Simplify right side
    233.95x = 43,818.89
  5. Step 5: Solve for x
    x = 43,818.89/233.95
  6. Step 6: Final answer
    x = 187.30

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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.