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Finding the Fourth Proportional to 1,570.47, 2,167.08 and 907.53

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Solution

The fourth proportional to 1,570.47, 2,167.08 and 907.53 is: 1,252.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,570.47 : 2,167.08 = 907.53 : x
  2. Step 2: Convert to fraction form
    1,570.47/2,167.08 = 907.53/x
  3. Step 3: Cross multiply
    1,570.47x = 2,167.08 × 907.53
  4. Step 4: Simplify right side
    1,570.47x = 1,966,698.93
  5. Step 5: Solve for x
    x = 1,966,698.93/1,570.47
  6. Step 6: Final answer
    x = 1,252.30

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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.