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Finding the Fourth Proportional to 313.52, 432.70 and 235.76

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Solution

The fourth proportional to 313.52, 432.70 and 235.76 is: 325.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    313.52 : 432.70 = 235.76 : x
  2. Step 2: Convert to fraction form
    313.52/432.70 = 235.76/x
  3. Step 3: Cross multiply
    313.52x = 432.70 × 235.76
  4. Step 4: Simplify right side
    313.52x = 102,013.35
  5. Step 5: Solve for x
    x = 102,013.35/313.52
  6. Step 6: Final answer
    x = 325.38

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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.