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Finding the Fourth Proportional to 562.65, 839.81 and 528.03

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Solution

The fourth proportional to 562.65, 839.81 and 528.03 is: 788.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    562.65 : 839.81 = 528.03 : x
  2. Step 2: Convert to fraction form
    562.65/839.81 = 528.03/x
  3. Step 3: Cross multiply
    562.65x = 839.81 × 528.03
  4. Step 4: Simplify right side
    562.65x = 443,440.68
  5. Step 5: Solve for x
    x = 443,440.68/562.65
  6. Step 6: Final answer
    x = 788.13

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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.