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Finding the Fourth Proportional to 1,690.07, 2,535.20 and 958.23

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Solution

The fourth proportional to 1,690.07, 2,535.20 and 958.23 is: 1,437.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,690.07 : 2,535.20 = 958.23 : x
  2. Step 2: Convert to fraction form
    1,690.07/2,535.20 = 958.23/x
  3. Step 3: Cross multiply
    1,690.07x = 2,535.20 × 958.23
  4. Step 4: Simplify right side
    1,690.07x = 2,429,303.50
  5. Step 5: Solve for x
    x = 2,429,303.50/1,690.07
  6. Step 6: Final answer
    x = 1,437.40

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1.5x scale

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.