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Finding the Fourth Proportional to 1,569.80, 2,354.70 and 474.93

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Solution

The fourth proportional to 1,569.80, 2,354.70 and 474.93 is: 712.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,569.80 : 2,354.70 = 474.93 : x
  2. Step 2: Convert to fraction form
    1,569.80/2,354.70 = 474.93/x
  3. Step 3: Cross multiply
    1,569.80x = 2,354.70 × 474.93
  4. Step 4: Simplify right side
    1,569.80x = 1,118,317.67
  5. Step 5: Solve for x
    x = 1,118,317.67/1,569.80
  6. Step 6: Final answer
    x = 712.40

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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.