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Finding the Fourth Proportional to 1,060.58, 1,590.60 and 330.02

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Solution

The fourth proportional to 1,060.58, 1,590.60 and 330.02 is: 494.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,060.58 : 1,590.60 = 330.02 : x
  2. Step 2: Convert to fraction form
    1,060.58/1,590.60 = 330.02/x
  3. Step 3: Cross multiply
    1,060.58x = 1,590.60 × 330.02
  4. Step 4: Simplify right side
    1,060.58x = 524,929.81
  5. Step 5: Solve for x
    x = 524,929.81/1,060.58
  6. Step 6: Final answer
    x = 494.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.