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Finding the Fourth Proportional to 579.24, 864.72 and 558.99

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Solution

The fourth proportional to 579.24, 864.72 and 558.99 is: 834.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.24 : 864.72 = 558.99 : x
  2. Step 2: Convert to fraction form
    579.24/864.72 = 558.99/x
  3. Step 3: Cross multiply
    579.24x = 864.72 × 558.99
  4. Step 4: Simplify right side
    579.24x = 483,369.83
  5. Step 5: Solve for x
    x = 483,369.83/579.24
  6. Step 6: Final answer
    x = 834.49

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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.