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Finding the Fourth Proportional to 1,482.58, 2,045.28 and 958.78

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Solution

The fourth proportional to 1,482.58, 2,045.28 and 958.78 is: 1,322.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,482.58 : 2,045.28 = 958.78 : x
  2. Step 2: Convert to fraction form
    1,482.58/2,045.28 = 958.78/x
  3. Step 3: Cross multiply
    1,482.58x = 2,045.28 × 958.78
  4. Step 4: Simplify right side
    1,482.58x = 1,960,973.56
  5. Step 5: Solve for x
    x = 1,960,973.56/1,482.58
  6. Step 6: Final answer
    x = 1,322.68

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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.