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Finding the Fourth Proportional to 1,590.53, 2,385.09 and 652.83

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Solution

The fourth proportional to 1,590.53, 2,385.09 and 652.83 is: 978.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,590.53 : 2,385.09 = 652.83 : x
  2. Step 2: Convert to fraction form
    1,590.53/2,385.09 = 652.83/x
  3. Step 3: Cross multiply
    1,590.53x = 2,385.09 × 652.83
  4. Step 4: Simplify right side
    1,590.53x = 1,557,055.06
  5. Step 5: Solve for x
    x = 1,557,055.06/1,590.53
  6. Step 6: Final answer
    x = 978.96

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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.