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Finding the Fourth Proportional to 1,653.37, 2,281.64 and 907.31

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Solution

The fourth proportional to 1,653.37, 2,281.64 and 907.31 is: 1,252.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,653.37 : 2,281.64 = 907.31 : x
  2. Step 2: Convert to fraction form
    1,653.37/2,281.64 = 907.31/x
  3. Step 3: Cross multiply
    1,653.37x = 2,281.64 × 907.31
  4. Step 4: Simplify right side
    1,653.37x = 2,070,162.76
  5. Step 5: Solve for x
    x = 2,070,162.76/1,653.37
  6. Step 6: Final answer
    x = 1,252.09

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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.