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Finding the Fourth Proportional to 1,264.37, 1,895.31 and 802.67

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Solution

The fourth proportional to 1,264.37, 1,895.31 and 802.67 is: 1,203.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,264.37 : 1,895.31 = 802.67 : x
  2. Step 2: Convert to fraction form
    1,264.37/1,895.31 = 802.67/x
  3. Step 3: Cross multiply
    1,264.37x = 1,895.31 × 802.67
  4. Step 4: Simplify right side
    1,264.37x = 1,521,299.00
  5. Step 5: Solve for x
    x = 1,521,299.00/1,264.37
  6. Step 6: Final answer
    x = 1,203.21

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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.