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Finding the Fourth Proportional to 487.07, 670.82 and 453.05

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Solution

The fourth proportional to 487.07, 670.82 and 453.05 is: 623.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    487.07 : 670.82 = 453.05 : x
  2. Step 2: Convert to fraction form
    487.07/670.82 = 453.05/x
  3. Step 3: Cross multiply
    487.07x = 670.82 × 453.05
  4. Step 4: Simplify right side
    487.07x = 303,909.38
  5. Step 5: Solve for x
    x = 303,909.38/487.07
  6. Step 6: Final answer
    x = 623.96

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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.