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Finding the Fourth Proportional to 1,091.29, 1,506.01 and 625.63

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Solution

The fourth proportional to 1,091.29, 1,506.01 and 625.63 is: 863.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,091.29 : 1,506.01 = 625.63 : x
  2. Step 2: Convert to fraction form
    1,091.29/1,506.01 = 625.63/x
  3. Step 3: Cross multiply
    1,091.29x = 1,506.01 × 625.63
  4. Step 4: Simplify right side
    1,091.29x = 942,197.51
  5. Step 5: Solve for x
    x = 942,197.51/1,091.29
  6. Step 6: Final answer
    x = 863.38

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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.