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Finding the Fourth Proportional to 345.58, 477.53 and 247.17

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Solution

The fourth proportional to 345.58, 477.53 and 247.17 is: 341.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    345.58 : 477.53 = 247.17 : x
  2. Step 2: Convert to fraction form
    345.58/477.53 = 247.17/x
  3. Step 3: Cross multiply
    345.58x = 477.53 × 247.17
  4. Step 4: Simplify right side
    345.58x = 118,027.47
  5. Step 5: Solve for x
    x = 118,027.47/345.58
  6. Step 6: Final answer
    x = 341.53

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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.