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Finding the Fourth Proportional to 1,570.93, 2,168.10 and 908.01

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Solution

The fourth proportional to 1,570.93, 2,168.10 and 908.01 is: 1,253.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,570.93 : 2,168.10 = 908.01 : x
  2. Step 2: Convert to fraction form
    1,570.93/2,168.10 = 908.01/x
  3. Step 3: Cross multiply
    1,570.93x = 2,168.10 × 908.01
  4. Step 4: Simplify right side
    1,570.93x = 1,968,656.48
  5. Step 5: Solve for x
    x = 1,968,656.48/1,570.93
  6. Step 6: Final answer
    x = 1,253.18

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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.