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Finding the Fourth Proportional to 555.27, 766.25 and 303.18

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Solution

The fourth proportional to 555.27, 766.25 and 303.18 is: 418.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.27 : 766.25 = 303.18 : x
  2. Step 2: Convert to fraction form
    555.27/766.25 = 303.18/x
  3. Step 3: Cross multiply
    555.27x = 766.25 × 303.18
  4. Step 4: Simplify right side
    555.27x = 232,310.16
  5. Step 5: Solve for x
    x = 232,310.16/555.27
  6. Step 6: Final answer
    x = 418.37

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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.