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Finding the Fourth Proportional to 1,019.48, 1,527.15 and 470.90

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Solution

The fourth proportional to 1,019.48, 1,527.15 and 470.90 is: 705.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,019.48 : 1,527.15 = 470.90 : x
  2. Step 2: Convert to fraction form
    1,019.48/1,527.15 = 470.90/x
  3. Step 3: Cross multiply
    1,019.48x = 1,527.15 × 470.90
  4. Step 4: Simplify right side
    1,019.48x = 719,134.94
  5. Step 5: Solve for x
    x = 719,134.94/1,019.48
  6. Step 6: Final answer
    x = 705.39

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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.