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Finding the Fourth Proportional to 1,312.41, 1,969.99 and 582.50

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Solution

The fourth proportional to 1,312.41, 1,969.99 and 582.50 is: 874.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312.41 : 1,969.99 = 582.50 : x
  2. Step 2: Convert to fraction form
    1,312.41/1,969.99 = 582.50/x
  3. Step 3: Cross multiply
    1,312.41x = 1,969.99 × 582.50
  4. Step 4: Simplify right side
    1,312.41x = 1,147,522.64
  5. Step 5: Solve for x
    x = 1,147,522.64/1,312.41
  6. Step 6: Final answer
    x = 874.36

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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.