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Finding the Fourth Proportional to 615.33, 921.48 and 477.23

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Solution

The fourth proportional to 615.33, 921.48 and 477.23 is: 714.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.33 : 921.48 = 477.23 : x
  2. Step 2: Convert to fraction form
    615.33/921.48 = 477.23/x
  3. Step 3: Cross multiply
    615.33x = 921.48 × 477.23
  4. Step 4: Simplify right side
    615.33x = 439,751.50
  5. Step 5: Solve for x
    x = 439,751.50/615.33
  6. Step 6: Final answer
    x = 714.66

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Double scale
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Similar ratio
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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.