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Finding the Fourth Proportional to 566.19, 780.64 and 528.53

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Solution

The fourth proportional to 566.19, 780.64 and 528.53 is: 728.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    566.19 : 780.64 = 528.53 : x
  2. Step 2: Convert to fraction form
    566.19/780.64 = 528.53/x
  3. Step 3: Cross multiply
    566.19x = 780.64 × 528.53
  4. Step 4: Simplify right side
    566.19x = 412,586.43
  5. Step 5: Solve for x
    x = 412,586.43/566.19
  6. Step 6: Final answer
    x = 728.71

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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.