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Finding the Fourth Proportional to 487.10, 670.65 and 453.98

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Solution

The fourth proportional to 487.10, 670.65 and 453.98 is: 625.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    487.10 : 670.65 = 453.98 : x
  2. Step 2: Convert to fraction form
    487.10/670.65 = 453.98/x
  3. Step 3: Cross multiply
    487.10x = 670.65 × 453.98
  4. Step 4: Simplify right side
    487.10x = 304,461.69
  5. Step 5: Solve for x
    x = 304,461.69/487.10
  6. Step 6: Final answer
    x = 625.05

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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.