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Finding the Fourth Proportional to 568.77, 784.53 and 484.53

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Solution

The fourth proportional to 568.77, 784.53 and 484.53 is: 668.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    568.77 : 784.53 = 484.53 : x
  2. Step 2: Convert to fraction form
    568.77/784.53 = 484.53/x
  3. Step 3: Cross multiply
    568.77x = 784.53 × 484.53
  4. Step 4: Simplify right side
    568.77x = 380,128.32
  5. Step 5: Solve for x
    x = 380,128.32/568.77
  6. Step 6: Final answer
    x = 668.33

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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.