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Finding the Fourth Proportional to 744.84, 1,117.28 and 360.36

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Solution

The fourth proportional to 744.84, 1,117.28 and 360.36 is: 540.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    744.84 : 1,117.28 = 360.36 : x
  2. Step 2: Convert to fraction form
    744.84/1,117.28 = 360.36/x
  3. Step 3: Cross multiply
    744.84x = 1,117.28 × 360.36
  4. Step 4: Simplify right side
    744.84x = 402,623.02
  5. Step 5: Solve for x
    x = 402,623.02/744.84
  6. Step 6: Final answer
    x = 540.55

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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.