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Finding the Fourth Proportional to 572.18, 858.45 and 474.23

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Solution

The fourth proportional to 572.18, 858.45 and 474.23 is: 711.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.18 : 858.45 = 474.23 : x
  2. Step 2: Convert to fraction form
    572.18/858.45 = 474.23/x
  3. Step 3: Cross multiply
    572.18x = 858.45 × 474.23
  4. Step 4: Simplify right side
    572.18x = 407,102.74
  5. Step 5: Solve for x
    x = 407,102.74/572.18
  6. Step 6: Final answer
    x = 711.49

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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.