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Finding the Fourth Proportional to 901.37, 1,244.46 and 621.51

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Solution

The fourth proportional to 901.37, 1,244.46 and 621.51 is: 858.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    901.37 : 1,244.46 = 621.51 : x
  2. Step 2: Convert to fraction form
    901.37/1,244.46 = 621.51/x
  3. Step 3: Cross multiply
    901.37x = 1,244.46 × 621.51
  4. Step 4: Simplify right side
    901.37x = 773,444.33
  5. Step 5: Solve for x
    x = 773,444.33/901.37
  6. Step 6: Final answer
    x = 858.08

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1.5x scale

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.