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Finding the Fourth Proportional to 903.40, 1,246.88 and 530.56

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Solution

The fourth proportional to 903.40, 1,246.88 and 530.56 is: 732.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    903.40 : 1,246.88 = 530.56 : x
  2. Step 2: Convert to fraction form
    903.40/1,246.88 = 530.56/x
  3. Step 3: Cross multiply
    903.40x = 1,246.88 × 530.56
  4. Step 4: Simplify right side
    903.40x = 661,544.65
  5. Step 5: Solve for x
    x = 661,544.65/903.40
  6. Step 6: Final answer
    x = 732.28

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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.