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Finding the Fourth Proportional to 1,019.32, 1,528.73 and 470.98

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Solution

The fourth proportional to 1,019.32, 1,528.73 and 470.98 is: 706.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,019.32 : 1,528.73 = 470.98 : x
  2. Step 2: Convert to fraction form
    1,019.32/1,528.73 = 470.98/x
  3. Step 3: Cross multiply
    1,019.32x = 1,528.73 × 470.98
  4. Step 4: Simplify right side
    1,019.32x = 719,993.98
  5. Step 5: Solve for x
    x = 719,993.98/1,019.32
  6. Step 6: Final answer
    x = 706.35

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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.