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Finding the Fourth Proportional to 487.33, 672.54 and 277.57

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Solution

The fourth proportional to 487.33, 672.54 and 277.57 is: 383.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    487.33 : 672.54 = 277.57 : x
  2. Step 2: Convert to fraction form
    487.33/672.54 = 277.57/x
  3. Step 3: Cross multiply
    487.33x = 672.54 × 277.57
  4. Step 4: Simplify right side
    487.33x = 186,677.43
  5. Step 5: Solve for x
    x = 186,677.43/487.33
  6. Step 6: Final answer
    x = 383.06

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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.