Home / 918.03-1,376.63-340.50

Finding the Fourth Proportional to 918.03, 1,376.63 and 340.50

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Solution

The fourth proportional to 918.03, 1,376.63 and 340.50 is: 510.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    918.03 : 1,376.63 = 340.50 : x
  2. Step 2: Convert to fraction form
    918.03/1,376.63 = 340.50/x
  3. Step 3: Cross multiply
    918.03x = 1,376.63 × 340.50
  4. Step 4: Simplify right side
    918.03x = 468,740.81
  5. Step 5: Solve for x
    x = 468,740.81/918.03
  6. Step 6: Final answer
    x = 510.59

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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.