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Finding the Fourth Proportional to 1,570.58, 2,167.45 and 907.42

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Solution

The fourth proportional to 1,570.58, 2,167.45 and 907.42 is: 1,252.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,570.58 : 2,167.45 = 907.42 : x
  2. Step 2: Convert to fraction form
    1,570.58/2,167.45 = 907.42/x
  3. Step 3: Cross multiply
    1,570.58x = 2,167.45 × 907.42
  4. Step 4: Simplify right side
    1,570.58x = 1,966,787.48
  5. Step 5: Solve for x
    x = 1,966,787.48/1,570.58
  6. Step 6: Final answer
    x = 1,252.27

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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.