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Finding the Fourth Proportional to 345.61, 477.05 and 233.74

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Solution

The fourth proportional to 345.61, 477.05 and 233.74 is: 322.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    345.61 : 477.05 = 233.74 : x
  2. Step 2: Convert to fraction form
    345.61/477.05 = 233.74/x
  3. Step 3: Cross multiply
    345.61x = 477.05 × 233.74
  4. Step 4: Simplify right side
    345.61x = 111,503.31
  5. Step 5: Solve for x
    x = 111,503.31/345.61
  6. Step 6: Final answer
    x = 322.63

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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.