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Finding the Fourth Proportional to 912.48, 1,256.08 and 795.84

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Solution

The fourth proportional to 912.48, 1,256.08 and 795.84 is: 1,095.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    912.48 : 1,256.08 = 795.84 : x
  2. Step 2: Convert to fraction form
    912.48/1,256.08 = 795.84/x
  3. Step 3: Cross multiply
    912.48x = 1,256.08 × 795.84
  4. Step 4: Simplify right side
    912.48x = 999,638.71
  5. Step 5: Solve for x
    x = 999,638.71/912.48
  6. Step 6: Final answer
    x = 1,095.52

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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.