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Finding the Fourth Proportional to 1,685.61, 2,529.55 and 589.98

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Solution

The fourth proportional to 1,685.61, 2,529.55 and 589.98 is: 885.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,685.61 : 2,529.55 = 589.98 : x
  2. Step 2: Convert to fraction form
    1,685.61/2,529.55 = 589.98/x
  3. Step 3: Cross multiply
    1,685.61x = 2,529.55 × 589.98
  4. Step 4: Simplify right side
    1,685.61x = 1,492,394.13
  5. Step 5: Solve for x
    x = 1,492,394.13/1,685.61
  6. Step 6: Final answer
    x = 885.37

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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.