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Finding the Fourth Proportional to 657.50, 986.36 and 332.87

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Solution

The fourth proportional to 657.50, 986.36 and 332.87 is: 499.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    657.50 : 986.36 = 332.87 : x
  2. Step 2: Convert to fraction form
    657.50/986.36 = 332.87/x
  3. Step 3: Cross multiply
    657.50x = 986.36 × 332.87
  4. Step 4: Simplify right side
    657.50x = 328,323.06
  5. Step 5: Solve for x
    x = 328,323.06/657.50
  6. Step 6: Final answer
    x = 499.35

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.