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Finding the Fourth Proportional to 1,527.03, 2,290.80 and 554.49

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Solution

The fourth proportional to 1,527.03, 2,290.80 and 554.49 is: 831.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,527.03 : 2,290.80 = 554.49 : x
  2. Step 2: Convert to fraction form
    1,527.03/2,290.80 = 554.49/x
  3. Step 3: Cross multiply
    1,527.03x = 2,290.80 × 554.49
  4. Step 4: Simplify right side
    1,527.03x = 1,270,225.69
  5. Step 5: Solve for x
    x = 1,270,225.69/1,527.03
  6. Step 6: Final answer
    x = 831.83

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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.