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Finding the Fourth Proportional to 572.78, 790.08 and 462.26

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Solution

The fourth proportional to 572.78, 790.08 and 462.26 is: 637.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.78 : 790.08 = 462.26 : x
  2. Step 2: Convert to fraction form
    572.78/790.08 = 462.26/x
  3. Step 3: Cross multiply
    572.78x = 790.08 × 462.26
  4. Step 4: Simplify right side
    572.78x = 365,222.38
  5. Step 5: Solve for x
    x = 365,222.38/572.78
  6. Step 6: Final answer
    x = 637.63

Related Problems

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Double scale
Find fourth proportional to 573.78, 791.46 and 463.26
Similar ratio
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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.