Home / 1,210.32-1,815.60-344.76

Finding the Fourth Proportional to 1,210.32, 1,815.60 and 344.76

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Solution

The fourth proportional to 1,210.32, 1,815.60 and 344.76 is: 517.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210.32 : 1,815.60 = 344.76 : x
  2. Step 2: Convert to fraction form
    1,210.32/1,815.60 = 344.76/x
  3. Step 3: Cross multiply
    1,210.32x = 1,815.60 × 344.76
  4. Step 4: Simplify right side
    1,210.32x = 625,946.26
  5. Step 5: Solve for x
    x = 625,946.26/1,210.32
  6. Step 6: Final answer
    x = 517.17

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Half scale
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Double scale
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1.5x scale

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.