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Finding the Fourth Proportional to 581.48, 872.45 and 307.49

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Solution

The fourth proportional to 581.48, 872.45 and 307.49 is: 461.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    581.48 : 872.45 = 307.49 : x
  2. Step 2: Convert to fraction form
    581.48/872.45 = 307.49/x
  3. Step 3: Cross multiply
    581.48x = 872.45 × 307.49
  4. Step 4: Simplify right side
    581.48x = 268,268.11
  5. Step 5: Solve for x
    x = 268,268.11/581.48
  6. Step 6: Final answer
    x = 461.36

Related Problems

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Double scale
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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.