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Finding the Fourth Proportional to 487.02, 672.09 and 265.98

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Solution

The fourth proportional to 487.02, 672.09 and 265.98 is: 367.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    487.02 : 672.09 = 265.98 : x
  2. Step 2: Convert to fraction form
    487.02/672.09 = 265.98/x
  3. Step 3: Cross multiply
    487.02x = 672.09 × 265.98
  4. Step 4: Simplify right side
    487.02x = 178,762.50
  5. Step 5: Solve for x
    x = 178,762.50/487.02
  6. Step 6: Final answer
    x = 367.05

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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.