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Finding the Fourth Proportional to 1,048.62, 1,574.02 and 970.86

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Solution

The fourth proportional to 1,048.62, 1,574.02 and 970.86 is: 1,457.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,048.62 : 1,574.02 = 970.86 : x
  2. Step 2: Convert to fraction form
    1,048.62/1,574.02 = 970.86/x
  3. Step 3: Cross multiply
    1,048.62x = 1,574.02 × 970.86
  4. Step 4: Simplify right side
    1,048.62x = 1,528,153.06
  5. Step 5: Solve for x
    x = 1,528,153.06/1,048.62
  6. Step 6: Final answer
    x = 1,457.30

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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.