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Finding the Fourth Proportional to 561.24, 841.26 and 459.18

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Solution

The fourth proportional to 561.24, 841.26 and 459.18 is: 688.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    561.24 : 841.26 = 459.18 : x
  2. Step 2: Convert to fraction form
    561.24/841.26 = 459.18/x
  3. Step 3: Cross multiply
    561.24x = 841.26 × 459.18
  4. Step 4: Simplify right side
    561.24x = 386,289.77
  5. Step 5: Solve for x
    x = 386,289.77/561.24
  6. Step 6: Final answer
    x = 688.28

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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.