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Finding the Fourth Proportional to 345.48, 515.10 and 341.88

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Solution

The fourth proportional to 345.48, 515.10 and 341.88 is: 509.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    345.48 : 515.10 = 341.88 : x
  2. Step 2: Convert to fraction form
    345.48/515.10 = 341.88/x
  3. Step 3: Cross multiply
    345.48x = 515.10 × 341.88
  4. Step 4: Simplify right side
    345.48x = 176,102.39
  5. Step 5: Solve for x
    x = 176,102.39/345.48
  6. Step 6: Final answer
    x = 509.73

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.