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Finding the Fourth Proportional to 1,045.32, 1,442.58 and 603.28

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Solution

The fourth proportional to 1,045.32, 1,442.58 and 603.28 is: 832.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,045.32 : 1,442.58 = 603.28 : x
  2. Step 2: Convert to fraction form
    1,045.32/1,442.58 = 603.28/x
  3. Step 3: Cross multiply
    1,045.32x = 1,442.58 × 603.28
  4. Step 4: Simplify right side
    1,045.32x = 870,279.66
  5. Step 5: Solve for x
    x = 870,279.66/1,045.32
  6. Step 6: Final answer
    x = 832.55

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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.