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Finding the Fourth Proportional to 903.28, 1,246.45 and 530.23

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Solution

The fourth proportional to 903.28, 1,246.45 and 530.23 is: 731.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    903.28 : 1,246.45 = 530.23 : x
  2. Step 2: Convert to fraction form
    903.28/1,246.45 = 530.23/x
  3. Step 3: Cross multiply
    903.28x = 1,246.45 × 530.23
  4. Step 4: Simplify right side
    903.28x = 660,905.18
  5. Step 5: Solve for x
    x = 660,905.18/903.28
  6. Step 6: Final answer
    x = 731.67

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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.