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Finding the Fourth Proportional to 1,703.30, 2,350.40 and 957.20

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Solution

The fourth proportional to 1,703.30, 2,350.40 and 957.20 is: 1,320.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,703.30 : 2,350.40 = 957.20 : x
  2. Step 2: Convert to fraction form
    1,703.30/2,350.40 = 957.20/x
  3. Step 3: Cross multiply
    1,703.30x = 2,350.40 × 957.20
  4. Step 4: Simplify right side
    1,703.30x = 2,249,802.88
  5. Step 5: Solve for x
    x = 2,249,802.88/1,703.30
  6. Step 6: Final answer
    x = 1,320.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.