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Finding the Fourth Proportional to 488.15, 672.75 and 340.52

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Solution

The fourth proportional to 488.15, 672.75 and 340.52 is: 469.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    488.15 : 672.75 = 340.52 : x
  2. Step 2: Convert to fraction form
    488.15/672.75 = 340.52/x
  3. Step 3: Cross multiply
    488.15x = 672.75 × 340.52
  4. Step 4: Simplify right side
    488.15x = 229,084.83
  5. Step 5: Solve for x
    x = 229,084.83/488.15
  6. Step 6: Final answer
    x = 469.29

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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.