Home / 904.03-1,247.40-511.04

Finding the Fourth Proportional to 904.03, 1,247.40 and 511.04

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Solution

The fourth proportional to 904.03, 1,247.40 and 511.04 is: 705.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    904.03 : 1,247.40 = 511.04 : x
  2. Step 2: Convert to fraction form
    904.03/1,247.40 = 511.04/x
  3. Step 3: Cross multiply
    904.03x = 1,247.40 × 511.04
  4. Step 4: Simplify right side
    904.03x = 637,471.30
  5. Step 5: Solve for x
    x = 637,471.30/904.03
  6. Step 6: Final answer
    x = 705.14

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Double scale
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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.