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Finding the Fourth Proportional to 673.14, 929.07 and 487.50

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Solution

The fourth proportional to 673.14, 929.07 and 487.50 is: 672.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    673.14 : 929.07 = 487.50 : x
  2. Step 2: Convert to fraction form
    673.14/929.07 = 487.50/x
  3. Step 3: Cross multiply
    673.14x = 929.07 × 487.50
  4. Step 4: Simplify right side
    673.14x = 452,921.63
  5. Step 5: Solve for x
    x = 452,921.63/673.14
  6. Step 6: Final answer
    x = 672.85

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1.5x scale

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.