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Finding the Fourth Proportional to 653.57, 902.64 and 433.45

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Solution

The fourth proportional to 653.57, 902.64 and 433.45 is: 598.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    653.57 : 902.64 = 433.45 : x
  2. Step 2: Convert to fraction form
    653.57/902.64 = 433.45/x
  3. Step 3: Cross multiply
    653.57x = 902.64 × 433.45
  4. Step 4: Simplify right side
    653.57x = 391,252.06
  5. Step 5: Solve for x
    x = 391,252.06/653.57
  6. Step 6: Final answer
    x = 598.64

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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.