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Finding the Fourth Proportional to 1,602.75, 2,211.81 and 904.14

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Solution

The fourth proportional to 1,602.75, 2,211.81 and 904.14 is: 1,247.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,602.75 : 2,211.81 = 904.14 : x
  2. Step 2: Convert to fraction form
    1,602.75/2,211.81 = 904.14/x
  3. Step 3: Cross multiply
    1,602.75x = 2,211.81 × 904.14
  4. Step 4: Simplify right side
    1,602.75x = 1,999,785.89
  5. Step 5: Solve for x
    x = 1,999,785.89/1,602.75
  6. Step 6: Final answer
    x = 1,247.72

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.