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Finding the Fourth Proportional to 1,018.25, 1,527.47 and 470.59

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Solution

The fourth proportional to 1,018.25, 1,527.47 and 470.59 is: 705.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,018.25 : 1,527.47 = 470.59 : x
  2. Step 2: Convert to fraction form
    1,018.25/1,527.47 = 470.59/x
  3. Step 3: Cross multiply
    1,018.25x = 1,527.47 × 470.59
  4. Step 4: Simplify right side
    1,018.25x = 718,812.11
  5. Step 5: Solve for x
    x = 718,812.11/1,018.25
  6. Step 6: Final answer
    x = 705.93

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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.