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Finding the Fourth Proportional to 907.41, 1,245.15 and 824.25

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Solution

The fourth proportional to 907.41, 1,245.15 and 824.25 is: 1,131.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    907.41 : 1,245.15 = 824.25 : x
  2. Step 2: Convert to fraction form
    907.41/1,245.15 = 824.25/x
  3. Step 3: Cross multiply
    907.41x = 1,245.15 × 824.25
  4. Step 4: Simplify right side
    907.41x = 1,026,314.89
  5. Step 5: Solve for x
    x = 1,026,314.89/907.41
  6. Step 6: Final answer
    x = 1,131.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.