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Finding the Fourth Proportional to 914.04, 1,260.44 and 648.36

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Solution

The fourth proportional to 914.04, 1,260.44 and 648.36 is: 894.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    914.04 : 1,260.44 = 648.36 : x
  2. Step 2: Convert to fraction form
    914.04/1,260.44 = 648.36/x
  3. Step 3: Cross multiply
    914.04x = 1,260.44 × 648.36
  4. Step 4: Simplify right side
    914.04x = 817,215.64
  5. Step 5: Solve for x
    x = 817,215.64/914.04
  6. Step 6: Final answer
    x = 894.07

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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.