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Finding the Fourth Proportional to 555.80, 766.88 and 467.63

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Solution

The fourth proportional to 555.80, 766.88 and 467.63 is: 645.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.80 : 766.88 = 467.63 : x
  2. Step 2: Convert to fraction form
    555.80/766.88 = 467.63/x
  3. Step 3: Cross multiply
    555.80x = 766.88 × 467.63
  4. Step 4: Simplify right side
    555.80x = 358,612.26
  5. Step 5: Solve for x
    x = 358,612.26/555.80
  6. Step 6: Final answer
    x = 645.22

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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.