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Finding the Fourth Proportional to 581.49, 868.07 and 561.24

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Solution

The fourth proportional to 581.49, 868.07 and 561.24 is: 837.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    581.49 : 868.07 = 561.24 : x
  2. Step 2: Convert to fraction form
    581.49/868.07 = 561.24/x
  3. Step 3: Cross multiply
    581.49x = 868.07 × 561.24
  4. Step 4: Simplify right side
    581.49x = 487,197.01
  5. Step 5: Solve for x
    x = 487,197.01/581.49
  6. Step 6: Final answer
    x = 837.84

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Half scale
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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.