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Finding the Fourth Proportional to 580.98, 868.16 and 550.20

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Solution

The fourth proportional to 580.98, 868.16 and 550.20 is: 822.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    580.98 : 868.16 = 550.20 : x
  2. Step 2: Convert to fraction form
    580.98/868.16 = 550.20/x
  3. Step 3: Cross multiply
    580.98x = 868.16 × 550.20
  4. Step 4: Simplify right side
    580.98x = 477,658.88
  5. Step 5: Solve for x
    x = 477,658.88/580.98
  6. Step 6: Final answer
    x = 822.16

Related Problems

Find fourth proportional to 290.49, 434.08 and 275.10
Half scale
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Double scale
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1.5x scale

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.