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Finding the Fourth Proportional to 1,378.36, 2,068.36 and 500.93

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Solution

The fourth proportional to 1,378.36, 2,068.36 and 500.93 is: 751.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378.36 : 2,068.36 = 500.93 : x
  2. Step 2: Convert to fraction form
    1,378.36/2,068.36 = 500.93/x
  3. Step 3: Cross multiply
    1,378.36x = 2,068.36 × 500.93
  4. Step 4: Simplify right side
    1,378.36x = 1,036,106.79
  5. Step 5: Solve for x
    x = 1,036,106.79/1,378.36
  6. Step 6: Final answer
    x = 751.69

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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.