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Finding the Fourth Proportional to 313.34, 432.52 and 215.08

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Solution

The fourth proportional to 313.34, 432.52 and 215.08 is: 296.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    313.34 : 432.52 = 215.08 : x
  2. Step 2: Convert to fraction form
    313.34/432.52 = 215.08/x
  3. Step 3: Cross multiply
    313.34x = 432.52 × 215.08
  4. Step 4: Simplify right side
    313.34x = 93,026.40
  5. Step 5: Solve for x
    x = 93,026.40/313.34
  6. Step 6: Final answer
    x = 296.89

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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.