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Finding the Fourth Proportional to 907.51, 1,244.83 and 899.70

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Solution

The fourth proportional to 907.51, 1,244.83 and 899.70 is: 1,234.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    907.51 : 1,244.83 = 899.70 : x
  2. Step 2: Convert to fraction form
    907.51/1,244.83 = 899.70/x
  3. Step 3: Cross multiply
    907.51x = 1,244.83 × 899.70
  4. Step 4: Simplify right side
    907.51x = 1,119,969.05
  5. Step 5: Solve for x
    x = 1,119,969.05/907.51
  6. Step 6: Final answer
    x = 1,234.11

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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.