Home / 1,210.53-1,815.34-344.55

Finding the Fourth Proportional to 1,210.53, 1,815.34 and 344.55

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Solution

The fourth proportional to 1,210.53, 1,815.34 and 344.55 is: 516.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210.53 : 1,815.34 = 344.55 : x
  2. Step 2: Convert to fraction form
    1,210.53/1,815.34 = 344.55/x
  3. Step 3: Cross multiply
    1,210.53x = 1,815.34 × 344.55
  4. Step 4: Simplify right side
    1,210.53x = 625,475.40
  5. Step 5: Solve for x
    x = 625,475.40/1,210.53
  6. Step 6: Final answer
    x = 516.70

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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.