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Finding the Fourth Proportional to 1,709.32, 2,564 and 476.82

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Solution

The fourth proportional to 1,709.32, 2,564 and 476.82 is: 715.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,709.32 : 2,564 = 476.82 : x
  2. Step 2: Convert to fraction form
    1,709.32/2,564 = 476.82/x
  3. Step 3: Cross multiply
    1,709.32x = 2,564 × 476.82
  4. Step 4: Simplify right side
    1,709.32x = 1,222,566.48
  5. Step 5: Solve for x
    x = 1,222,566.48/1,709.32
  6. Step 6: Final answer
    x = 715.24

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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.