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Finding the Fourth Proportional to 340.61, 469.80 and 247.25

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Solution

The fourth proportional to 340.61, 469.80 and 247.25 is: 341.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.61 : 469.80 = 247.25 : x
  2. Step 2: Convert to fraction form
    340.61/469.80 = 247.25/x
  3. Step 3: Cross multiply
    340.61x = 469.80 × 247.25
  4. Step 4: Simplify right side
    340.61x = 116,159.22
  5. Step 5: Solve for x
    x = 116,159.22/340.61
  6. Step 6: Final answer
    x = 341.04

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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.