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Finding the Fourth Proportional to 566.84, 781.72 and 419.84

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Solution

The fourth proportional to 566.84, 781.72 and 419.84 is: 578.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    566.84 : 781.72 = 419.84 : x
  2. Step 2: Convert to fraction form
    566.84/781.72 = 419.84/x
  3. Step 3: Cross multiply
    566.84x = 781.72 × 419.84
  4. Step 4: Simplify right side
    566.84x = 328,197.32
  5. Step 5: Solve for x
    x = 328,197.32/566.84
  6. Step 6: Final answer
    x = 578.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.