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Finding the Fourth Proportional to 691.51, 953.73 and 608.44

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Solution

The fourth proportional to 691.51, 953.73 and 608.44 is: 839.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    691.51 : 953.73 = 608.44 : x
  2. Step 2: Convert to fraction form
    691.51/953.73 = 608.44/x
  3. Step 3: Cross multiply
    691.51x = 953.73 × 608.44
  4. Step 4: Simplify right side
    691.51x = 580,287.48
  5. Step 5: Solve for x
    x = 580,287.48/691.51
  6. Step 6: Final answer
    x = 839.16

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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.