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Finding the Fourth Proportional to 746.01, 1,026.68 and 668.25

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Solution

The fourth proportional to 746.01, 1,026.68 and 668.25 is: 919.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    746.01 : 1,026.68 = 668.25 : x
  2. Step 2: Convert to fraction form
    746.01/1,026.68 = 668.25/x
  3. Step 3: Cross multiply
    746.01x = 1,026.68 × 668.25
  4. Step 4: Simplify right side
    746.01x = 686,075.57
  5. Step 5: Solve for x
    x = 686,075.57/746.01
  6. Step 6: Final answer
    x = 919.66

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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.