Home / 1,445.10-2,166.32-470.70

Finding the Fourth Proportional to 1,445.10, 2,166.32 and 470.70

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Solution

The fourth proportional to 1,445.10, 2,166.32 and 470.70 is: 705.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,445.10 : 2,166.32 = 470.70 : x
  2. Step 2: Convert to fraction form
    1,445.10/2,166.32 = 470.70/x
  3. Step 3: Cross multiply
    1,445.10x = 2,166.32 × 470.70
  4. Step 4: Simplify right side
    1,445.10x = 1,019,686.82
  5. Step 5: Solve for x
    x = 1,019,686.82/1,445.10
  6. Step 6: Final answer
    x = 705.62

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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.