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Finding the Fourth Proportional to 1,020.10, 1,527.69 and 525.21

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Solution

The fourth proportional to 1,020.10, 1,527.69 and 525.21 is: 786.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020.10 : 1,527.69 = 525.21 : x
  2. Step 2: Convert to fraction form
    1,020.10/1,527.69 = 525.21/x
  3. Step 3: Cross multiply
    1,020.10x = 1,527.69 × 525.21
  4. Step 4: Simplify right side
    1,020.10x = 802,358.06
  5. Step 5: Solve for x
    x = 802,358.06/1,020.10
  6. Step 6: Final answer
    x = 786.55

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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.